Tiny quake felt in East County

A magnitude 2.1 earthquake occurred at 9:23 a.m. Saturday 17 miles east of El Cajon, producing just enough energy to be felt in parts of East County, says the U.S. Geological Survey. The fault that produced the quake, which began 7.6 miles deep, has not been identified. The USGS said it received scattered reports of people reported feeling minor shaking in Alpine, Poway, El Cajon, Lakeside and San Diego. Shaking from such "micro-quakes" if often mistaken for the rumble of passing trucks.